NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 39
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 15
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2011-10-21 647-769 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2011-10-21 709-284 not yet reported which blocks → Bragg Communications Inc. 4878 Long Pond —
2011-10-21 709-286 not yet reported which blocks → Bragg Communications Inc. 4878 Freshwater —
2011-10-21 709-287 not yet reported which blocks → Bragg Communications Inc. 4878 Gander —
2011-10-21 709-289 not yet reported which blocks → Bragg Communications Inc. 4878 Corner Brook —
2011-10-21 709-358 not yet reported which blocks → Bragg Communications Inc. 4878 Grand Falls —
2011-10-21 928-319 2XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DILKON AZ
2011-10-21 928-489 0XXX1XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 KAYENTA AZ
2011-10-21 937-240 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F BELLE CTR OH
2011-10-20 225-239 0–9 XXXall 10 · 5 holders which blocks → VOICESTREAM GSM I, LLC 150C BATONROUGE LA
2011-10-20 318-319 0–9 XXXall 10 · 6 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ALEXANDRIA LA
2011-10-20 501-313 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J LITTLEROCK AR
2011-10-20 504-316 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2011-10-20 504-351 0–9 XXXwhole prefix which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
2011-10-20 504-385 0–9 XXXall 10 · 3 holders which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2011-10-20 504-502 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2011-10-20 504-607 0–9 XXXall 10 · 4 holders which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2011-10-20 504-641 0–9 XXXall 10 · 3 holders which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
2011-10-20 506-378 not yet reported which blocks → Bell Mobility Aliant 329A Moncton —
2011-10-20 775-210 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SILVER SPG NV
2011-10-20 778-281 not yet reported which blocks → Bell Mobility 6574 Prince George —
2011-10-20 980-335 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC
2011-10-19 240-513 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HAGERSTOWN MD
2011-10-19 470-362 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 ATLANTA NE GA
2011-10-19 509-724 0–9 XXXall 10 · 4 holders which blocks → QWEST CORPORATION 9638 SPOKANE WA
2011-10-19 585-386 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANGELICA NY
2011-10-19 615-209 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 7977 NASHVILLE TN
2011-10-19 617-637 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 JAMAICA PL MA
2011-10-19 774-305 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NEWBEDFORD MA
2011-10-19 816-488 0–9 XXXwhole prefix which blocks → EVERFAST FIBER NETWORKS LLC 3915 KANSASCITY MO
2011-10-19 843-507 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C NEWTONVL SC
2011-10-19 919-492 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 RALEIGH NC
2011-10-19 919-578 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 RALEIGH NC
2011-10-19 919-987 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 RALEIGH NC
2011-10-19 978-320 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 WESTFORD MA
2011-10-18 226-378 not yet reported which blocks → Bell Mobility 6574 London —
2011-10-18 506-478 not yet reported which blocks → Bell Mobility Aliant 329A Fredericton —
2011-10-18 587-336 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2011-10-18 587-343 not yet reported which blocks → Bell Mobility 6574 Grande Prairie —
2011-10-18 604-358 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2011-10-18 613-305 not yet reported which blocks → Bell Mobility 6574 Kingston —
2011-10-18 613-402 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2011-10-18 778-269 not yet reported which blocks → Bell Mobility 6574 Nanaimo —
2011-10-18 918-240 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2011-10-18 931-408 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TULLAHOMA TN
2011-10-17 206-747 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2011-10-17 401-612 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 PROVIDENCE RI
2011-10-17 404-655 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-10-17 404-719 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2011-10-17 405-505 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.